Blowtorch



Patented Apr. 11, 1922.

.BLOWTORCH APPLICATION FILED 061221. 1920.

I. L. LAYT ON AND G P. WALLACE.

mmmg;

r JAMES L. LAYTON Ann enonon r. WALLACE, or TACOMA, wasnrne'ron.

BLOW'IORCEI.

iaiacee. specificationmete-smea- Patented Apr, ii, ieea; Application filed October 21, 1920. Serial No. 413,614.

To all whom it may concern: internal construction and specific mixing Be it known that we, JAMES L. LAYTON device more clearly. and Gnonon P. VVALLAon, citizens of the Figure 3 is a sectional view of one of the United States, residing at Tacoma, in the details of the device. 60 5 county of Pierce and State of Washington, Figure 4 is a detail elevational View of my have invented certain new and useful lmimproved mixing device. provements in Blowtorches; and we do In carrying out the invention, we employ declare the following to be a full, clear, and a body member which is provided with a exact description of the invention, such as mixing chamber having fuel inlet and outlet 65 will enable others skilled in the art to which means communicating therewith, there being it appertains to make and use the same. a novel mixing member of disk-like forma- This invention relates broadly to imtion loosely mounted in this mixing champrovements in blow-torches, and has more her, the same being rotated and solely held articular reference to a novel device to be in its proper place by means of the fuel un- 70 installed in the mixing chamber of a blowder pressure which is directed against it. torch which will obtain an intimate mixture Referring to the drawings, wherein the of the oil and air and will thus produce an preferred embodiment of my invention is efficient combustible mixture which is betclearly disclosed, it will be seen that the nuter than the ordinary mixture produced. meral 1 designates, as a whole, a body mem- 75 The-principal object of the invention is to her which is provided with a mixing chamgenerally improve upon and simplify the her 2 wherein the air and oil are intimately construction of blow-torches and the like mixed before passage out of this chamber. including mixing devices. Communicating with'this chamber at one 7 Another object of the invention is to proend, are fuel feed pipes 3 and l, air being 80 vi'd'e an improved mixing device for torches fed through the first named pipe and oil orand the like comprising small disk-like kerosene being fed through the pipe l. Also m'emberprovided with peripheral angularly communicating with this chamber and exdisposed blades which are twisted laterally tending from the opposite end thereof is a with respect to the body portion so as to suitable discharge passage 5. Before going at provide'spaces between them to permit the into the description of my improved mixing passage of a portion of the fuel therethrough, device, we will first set forth the specific conthis disk-like member being loosely mountstruction and arrangement of the body memed in the mixing chamber and solely rotated her 1. This body member is preferably and held in the proper position by the fuel made up of a centrally bored element 6 pro- 35 which is forced against it. vided with screw-threaded portions 7 and A further object of the invention isto S, a screw-cap 9 which is fitted onto the exprovide a novel mixing device of the above tension 7, thus forming the aforesaid chammentioned type which is provided with a her 2 between its closed end and the adjacentrally disposed escape port arranged in cent end of theelement 6." The closed end 40 parallelism with the air inlet passage and of the screw-cap 9 is provided with a pludischarge passage of the device, whereby the rality of passages 10 with which the fuel air will pass through it and cause the mixpipes and 4t communicate. It may be stated ture to be more effectively expelled from the at this point that it is desirable to equip the discharge passage. oil supply pipe 4i with a suitable check valve 4 Other objects and advantages of he in- 11. Any suitable means, for instance a nipvention will be. apparent during the course pic 12 and a pipe 13 may be connected to the of the following description. portion 8 of the element 6 for the purpose In the accompanying drawings forming of distributing the mixed fuel to a suitable a part of this specification and in which like part such as a burner head or a nozzle which 50 numerals are employed to designate like ever may be connected to the end of the pipe parts throughout the same 13. Now by referring back to the element 6, Figure l is an elevational view of a torch it will be seen that we form a conical socket constructed in accordance with my inveni i in the end of this element which commution. uicatcs with the mixing chamber 2. This 55 Figure 2 is a central longitudinal sectional socket constitutes what may well be termed view, with parts in elevation, show n the a seat and this seat is adapted to receive and support my improved mixing device, designated, as a whole, by the numeral 15. The mixingdevice 15 is preferablyin the form of a metal disk which has its periphery split to provide a plurality of blades 16 which are angularly bent with respect thereto and are twisted laterally to provide spaces between them which permits passage of a portion of the fuel therethrough and into the discharge passage 5. Attention is directed to the fact that this mixing member 15 is loosely mounted. within the chamber and rests against the conical seat 14. There is no special means employed to retain the mixing member in pos'ition'and it is retained in position and solely rotated by means of the fuel under pressure which is directed against it. Careful examination of the location of the air pipe 3 will disclose the fact that it is located at approximately the center of the screwcap 9 so that the air issuing therefrom will contact the imperforate portion of the disk 15 and. retain the latter in place. Furthermore, since the disk 15 is provided with a centrally located fuel escape port 17 it will be seen that a great portion of the air issuing from the pipe 3 will effectively carry the 7 mixed fuel through this opening 17 and will also effectively expel the fuel from the discharge passage 5 and give it suflicient velocity to cause it to reach the burner head or nozzle on the end of the distributing pipe 13. Attention is further directed to the fact that the member 6 and the screw-cap 9 are both provided with flat face exterior portions to permit a wrench or the like to effectively engage these portions to disconnect the parts of the body for cleaning and repairing. 1

The operation of the device is as follows: Air under pressure is fed through the pipe 3 into the chamber 2 while oil or other similar fuel, likewise under slight pressure, is

supplied to this" chamber 2 through the pipe l, the passage of this part of the fuel being controlled by means of the valve 11. Since the air pipe is centrally located, the air issuing therefrom will be forced against the imperforate portion of the disk 15 and retain the latter in position in the seat 14 and a portion of this air in conjunction with the oil which isdirected against the blades 16 will cause automatic rotation of this member 15 and in so doing willbring about a complete andintimate mixture of air and oil and will form a very efficient combustible. fuel vapor, the greater portion of which is forced through the central aperture 13 in the member 15 by H the swift current of air which passes therethrough. The peculiar construction of the angular blades 16 of the member 15 provides spaces between them through which a portion of the oil will seep and gain entrance to the discharge passage 5. As the space between these blades is somewhat limited, the

amount of oil passing therethrough will be restricted so as to insure that the proper proportion of air and oil'will enter the discharge passage 5. The velocity at which the air passes through the central port 17 in the member 15 is suflicient to effectively carry the thoroughly mixed fuel through the parts 12 and 13 to the burner head or nozzle on the end of the latter and a perfect blue flame will be produced.

From the foregoing description, it will be seen that we have devised an extremely effective mixing device for installation in the. mixing chamber of a torch or the like which will insure an intimate mixture of the air and oil or other fuel, one which is extremely simple in construction and inexpensive to, manufacture, and one which may be easily replaced whenever desired or necessary due. to the easy disconnection of the parts, of the body in which it is arranged. By loosely mounting this mixing device in the chamber and solely rotating it and retaining it in position against its seat by the fuel under pres sure which is directed against it, a novel device has been produced. By arranging the air pipe at a point centrally of the screwcap which supports it, the current of air issue ing therefrom not only effectively retains the m xingdevice in position, but a portion of, this air passes'through the central opening in the mixing chamber and insures anefie'c tive expulsion of the mixed fuel from, the discharge passage and gives the fuel sufli cient velocitytoinsure that it will reach the A careful consideration of the foregoing.

description taken in connection with the ac-, companying drawings will enable persons. skilled in the art to which the invention relates, to obtain a clear understanding of the same, therefore, further description. is deemed unnecessary. Y Since advantageous results may be obtained with the construction and arrange ment herein described and shown; this con-v struction and arrangement is taken as the preferred embodiment of my invention. owever, it is to be understood that various minor changes in the shape, size, and arrangement of parts may be resorted to so long as they do not depart from the spirit of the invention or the scope of the subjoined claims.

We claim:

1. A device of the class described compris- 1 30 ing a body including a chamber having a fuel inlet and an outlet communicating with the chamber, a separate and independent mixing member arranged for rotation in said chamber the same being provided with a plurality of angular mixing blades and a restricted port registering with said outlet.

2. A device of the class described comprising a body including a chamber having fuel inlets and an outlet, and a member for mixing the fuel rotatable in said chamber, said member being a centrally apertured disk, the periphery of which is slitted to provide a series of blades which are angularly bent and twisted laterally to provide passages between them for the fuel.

3. A fuel mixing device comprising a body having a chamber provided with a fuel inlet and an outlet, and a loosely mounted mixing member arranged in the chamber, being rotated and solely held against one wall of the chamber by the fuel and air which is directed against it.

4. A fuel mixing device comprising a body having a fuel mixing chamber provided with feed and discharge means, and being also provided with a socket communicating with said discharge means, and a disk-like mixing member loosely mounted in said socket, being provided with angular peripheral blades and being solely rotated and held in the socket by the fuel and air which is directed against it.

5. The structure set forth in claim 4, said disk-like member being provided with a relatively small central fuel escape opening communicating with said discharge means.

In testimony whereof we have hereunto set our hands.

JAMES L. LAYTON. GEORGE P. WALLACE. 

